EXR Confusion not fully resolved

Started Jan 25, 2014 | Discussions thread
Kim Letkeman
Kim Letkeman Forum Pro • Posts: 33,428
Re: Will EXR Confusion ever be fully resolved?

DS21 wrote:

I too tried to discuss the EXR workings with the two most vocal experts, where I thought they were wrong, but very soon I realized it is just a waste of time. But I fully agree with your position that we can only assume what is really going on, especially in JPEG, but never know for sure. I, for one part, don't buy the assumed fact that the second set of photosites is not used at all when ISO is larger then DR in M size mode (ay least in JPEG in non-RAW enabled cameras). It that would be the case, there would be much more noise compared to EXR SN mode, but it is often less noise so both 6 MP halves are probably still used (one exposed shorter) and noise is still averaged out between the two halves.

Exactly ... a difference that makes no difference, is no difference ...

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